Well don't know how much I can be, but I'll try. When you get into old stuff, sometimes other brands interchange. Examples of this are years ago Ford, dodge and Chevy use to all have the same 8 bolt wheel pattern. My allis Chalmers tractor has John Deere combine wheels on it. A ( I will enclose pics) don't know about old drills. I know a couple no name under the radar ag salvage and repair places that will treat you right. If they cant help maybe they can point you in the right direction. I 'll see if I can't get thsir number for you, but they should be on the internet.
The first is Stauffer ag salvage and in Mayetta, ks. He has been doing this for years, use to have lots of old stuff and will treat you good.
The second is Elmer's repair in Centralia Kansas. He should be online. He used to specialize in case tractors and stuff but has expanded a lot over the years. He has a lot of stuff in his salvage yard.
Another ag salvage yard that may be able to help is all states ag salvage. They are a big player in the ag salvage business, and I know they're on the internet. Hope these leads help somehow.